129826880

素因数分解:

$2^6\times 5^1\times {\mathrm{405709}}^1$

素因数の和:405726

約数の個数: 28

約数和(自身を含む): 309151020

約数和(自身を除く): 179324140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 405709, 811418, 1622836, 2028545, 3245672, 4057090, 6491344, 8114180, 12982688, 16228360, 25965376, 32456720, 64913440, 129826880]

約数ペア:

[(1, 129826880), (2, 64913440), (4, 32456720), (5, 25965376), (8, 16228360), (10, 12982688), (16, 8114180), (20, 6491344), (32, 4057090), (40, 3245672), (64, 2028545), (80, 1622836), (160, 811418), (320, 405709)]